Method for producing spherical particles of carbon and of activa

Details Method for producing spherical particles of carbon and of activa Method for producing spherical particles of carbon and of activa

1982-12-09

1983-12-13

Hall, James R.

Plastic and nonmetallic article shaping or treating: processes

Spheroidizing or rounding of solid particles

264141, 264291, B22B 1101

Patent

active

044204434

ABSTRACT:
A method for producing spherical particles of carbon and of activated carbon is described, in which a mixture of a pitch and a viscosity-reducing agent is melt-extruded into a form of string-like bodies, the thus obtained string-like bodies are broken into stick-like bodies of a length to diameter ratio of 1 to 5 and the stick-like bodies are thermally deformed utilizing hot water as a thermal medium into spherical particles. The spherical particles are then subjected to conventional extraction to remove the viscosity-reducing agent therefrom, and the thus obtained spherical particles of pitch are converted into spherical particles of carbon or of activated carbon.

REFERENCES:
patent: 3019485 (1962-02-01), Diamond
patent: 3063099 (1962-11-01), Turner et al.
patent: 3350482 (1967-10-01), Bowers
patent: 3659000 (1972-04-01), Cyonk
patent: 3755527 (1973-08-01), Keller et al.

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